140.221.72.0/21 Argonne National Laboratory
Announced by AS683 Argonne National Laboratory. RPKI valid Seen by 5 of our 5 looking glass sessions.
Summary
What the table says about 140.221.72.0/21
Prefix
Origin
AS683 ARGONNE-AS
RPKI
RPKI valid
Size
2,048 addresses
Less specific
none
More specifics
0
IRR route objects
2 exact, 0 covering
In RouteViews
2026-10-14 16:02 UTC
Paths
How 140.221.72.0/21 is reached
Every path our looking glass collectors hold for this exact prefix. Open one for its attributes, or see them all side by side in the looking glass.
AS36601 TNT (TNT - Tampa, FL)Collector-1-TAMPA-FL36601 13760 293 683×2
| Origin | AS683 Argonne National Laboratory |
| Origin code | IGP |
| Communities | 13760:3109 36601:150 36601:2001 36601:13760 |
| Updated | 14h 6m ago |
AS903 UNIFIED-COMMUNICATIONS-TECHNOLOGIES (UCT - Valdosta, GA)Collector-2-COCOA-FL903 13760 293 683×2
| Origin | AS683 Argonne National Laboratory |
| Origin code | IGP |
| Communities | 903:900 903:13760 |
| Updated | 7d 0h ago |
AS36295 FLORIDA-HIGH-SPEED-INTERNET (FLHSI - Cocoa, FL)Collector-2-COCOA-FL36295 6939 293×3 683×2
| Origin | AS683 Argonne National Laboratory |
| Origin code | IGP |
| Communities | 36295:100 |
| Updated | 7d 0h ago |
RPKI
Route origin authorizations
Covered by a ROA authorizing AS683 to originate 140.221.72.0/21 up to /21. Validate another origin.
| ROA prefix | Max length | Authorized origin | Trust anchor |
|---|---|---|---|
| 140.221.72.0/21 | /21 | AS683 ARGONNE-AS | ARIN |
IRR
Route objects
Registered in the IRR for this prefix and the ones covering it. Look it up live.
| Route | Origin | Source | Description | Maintained by |
|---|---|---|---|---|
| 140.221.72.0/21 | AS683 ARGONNE-AS | ARIN | Argonne National Laboratory | MNT-ANL-13-Z |
| 140.221.72.0/21 | AS683 ARGONNE-AS | RADB | Argonne National Laboratory | MAINT-AS683 |